astronomy

Urs Eggli

Urs Eggli is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Urs Eggli rather than just read about it. In short: Urs Eggli (born 11 February 1959) is a Swiss botanist and non-fiction author specializing in succulent plants, particularly cacti. Since 1986, he has worked as a scientific staff member at the Succulent Collection Zurich, a specialized department of Grün Stadt Zürich.

Key takeaways

Urs Eggli belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Urs Eggli to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Urs Eggli from memory before moving on to harder problems.

Reference excerpt

Urs Eggli (born 11 February 1959) is a Swiss botanist and non-fiction author specializing in succulent plants, particularly cacti. Since 1986, he has worked as a scientific staff member at the Succulent Collection Zurich, a specialized department of Grün Stadt Zürich.

Biography Eggli completed his secondary education in 1978 and subsequently studied biology with a focus on systematic botany at the University of Zurich. He completed his master's degree in 1983 with a thesis entitled The stomata of the Cactaceae. Between 1983 and 1987, Eggli pursued doctoral studies at the University of Zurich under the supervision of Karl Urs Kramer, earning a PhD. His dissertation, A monographic study of the genus Rosularia (Crassulaceae), was published in 1988 as a supplement to volume 6 of Bradleya, the yearbook of the British Cactus and Succulent Society. Since 1986, Eggli has been employed as a scientific collaborator at the Succulent Collection Zurich. He served as editor of the multi-volume reference series Illustrated Handbook of Succulent Plants, published between 2001 and 2003. Since 1984, Eggli has also served as editor of the annual Repertorium Plantarum Succulentarum, published by the International Organization for Succulent Plant Study (IOS). His research interests focus on the systematics, nomenclature, evolution, and biodiversity of succulent plants. Eggli has conducted extensive field research in Argentina, Brazil, Chile, and Uruguay, contributing empirical data on succulent diversity and evolution in South America.

Honors and awards In 2007, Eggli was named a Fellow of the Cactus and Succulent Society of America in recognition of his scientific and editorial contributions to succulent plant research. In 2014, the International Organization for Succulent Plant Study nominated Eggli for the Cactus d’Or, awarded by the Principality of Monaco. He received the award in June 2015 at the Jardin Exotique de Monaco.

Selected works

Books A Type Specimen Register of Cactaceae in Swiss Herbaria (1987) A monographic study of the genus Rosularia (Crassulaceae) (1988) Glossary of Botanical Terms with Special Reference to Succulent Plants (1993) Sukkulenten (1994; 2nd ed. 2008) Cactaceae of South America. The Ritter Collections (1995), with Mélica Muñoz-Schick and Beat Ernst Leuenberger The CITES Checklist of Succulent Euphorbia Taxa (1997), with Susan Carter Etymological Dictionary of Succulent Plant Names (2004), with Leonard Eric Newton

Selected articles “Living under temporarily arid conditions – succulence as an adaptive strategy” (2009) “Disintegrating Portulacaceae” (2010) “An up-to-date familial and suprafamilial classification of succulent plants” (2010) “A farewell to dated ideas and concepts: molecular phylogenetics and a revised suprageneric classification of the family Cactaceae” (2010)

References

External links Biographical note – Cactus and Succulent Society of America Entry – University of Zurich Herbaria Cactus d’Or award ceremony – Monaco

Illustrations

Worked examples

Example 1 — a first encounter with Urs Eggli

Start with the simplest possible case. Write down what Urs Eggli claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Urs Eggli before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Urs Eggli ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Urs Eggli

In research: Urs Eggli appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Urs Eggli in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Urs Eggli is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1959 births, 20th-century Swiss scientists, 21st-century Swiss scientists, so understanding it makes those chapters shorter.
In everyday life: Look for Urs Eggli outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Urs Eggli in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Urs Eggli means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Urs Eggli out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Urs Eggli in simple terms?

Why does Urs Eggli matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Urs Eggli?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Urs Eggli.